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Finding the Third Proportional to 576 and 1,243

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Solution

The third proportional to 576 and 1,243 is: 2,682.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    576 : 1,243 = 1,243 : x
  2. Step 2: Convert to fraction form
    576/1,243 = 1,243/x
  3. Step 3: Cross multiply
    576x = 1,243 × 1,243
  4. Step 4: Simplify right side
    576x = 1,545,049
  5. Step 5: Solve for x
    x = 1,545,049/576
  6. Step 6: Final answer
    x = 2,682.38

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.